210 CONTEMPORARY SCIENCE 



ness the rapid development of varied methods for improv- 

 ing scientific placement and vocational guidance. It is 

 highly probable that grading in the public schools, in col- 

 leges and professional schools will shortly be based in part 

 upon measurement of mental ability instead of exclusively 

 on measurements of acquisition. The war has worked a 

 miracle for what may properly be called mental engineer- 

 ing by precipitating expectations, surmises and desires 

 which have long sought expression. Yesterday a few 

 men believed in the probability of the early appearance 

 and practical usefulness of this new branch of engineer- 

 ing; to-day scores of business men, educators and men of 

 other scientific professions are convinced that it has ar- 

 rived and demand its rapid and effective development. 



The complete scientific report on the psychological 

 data which the army has supplied and of which mere 

 glimpses have been given in this article should constitute 

 the basis for further important advances in methods of 

 mental measurement and should greatly add to the knowl- 

 edge of the distribution of intelligence and its varied and 

 significant relations. These reports are in preparation 

 and it is hoped that they may be published without undue 

 delay. 



